July 31, 2007

Katherine Trinidad Headquarters, Washington 202-358-3749 katherine trinidad@nasa gov

George Diller Kennedy Space Center, Fla 321-867-2468 george h diller@nasa gov

MEDIA ADVISORY: 07-097

NASA POSTPONES PHOENIX LAUNCH

CAPE CANAVERAL, Fla -- Friday's scheduled launch of NASA's Phoenix Mars Lander aboard a United Launch Alliance Delta II rocket has been postponed 24 hours The two available launch times on Saturday, Aug 4, are 5:26:34 a m and 6:02:59 a m EDT

Due to a forecast for severe weather around the Kennedy Space Center launch pad in Florida on Tuesday afternoon, fueling of the second stage will not be completed Although fueling is expected to be finished Wednesday morning, there is insufficient contingency time in the schedule to move forward with the launch on Friday

The prelaunch news conference is now scheduled for Thursday, Aug 2, at 2 p m at the NASA press site at Kennedy Space Center All other planned events for the news media will occur 24 hours after their originally scheduled times NASA Television and Web coverage will begin at 3:30 a m on Saturday For more information about the Phoenix mission, visit:

http://www nasa gov/phoenix

For more information about NASA TV, streaming video, and downlink and schedule information, visit:

http://www nasa gov/ntv

For information about NASA and agency programs, visit:

http://www nasa gov

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